542581520828 has 24 divisors (see below), whose sum is σ = 953779814400. Its totient is φ = 270073201968.

The previous prime is 542581520813. The next prime is 542581520933. The reversal of 542581520828 is 828025185245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18580343 + ... + 18609521.

It is an arithmetic number, because the mean of its divisors is an integer number (39740825600).

Almost surely, 2^542581520828 is an apocalyptic number.

It is an amenable number.

542581520828 is a deficient number, since it is larger than the sum of its proper divisors (411198293572).

542581520828 is a wasteful number, since it uses less digits than its factorization.

542581520828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49889 (or 49887 counting only the distinct ones).

The product of its (nonzero) digits is 2048000, while the sum is 50.

The spelling of 542581520828 in words is "five hundred forty-two billion, five hundred eighty-one million, five hundred twenty thousand, eight hundred twenty-eight".